CSS if() Function Polyfill, PostCSS plugin and Stylelint plugin

We're providing several solutions for the CSS if() function with hybrid build-time and runtime processing. Transforms CSS if() functions to native @media and @supports rules where possible, with runtime fallback for dynamic conditions. The following packages are provided by this monorepo:

• A modern JavaScript polyfill,
• a PostCSS plugin,
• a Lightning CSS plugin and
• a Stylelint plugin (to extend to prevent lint false positives)

Contributing

Please have a look at our CONTRIBUTION guidelines.

License

MIT License - see LICENSE file for details.